Kan ik een veld tonen op basis van meerdere antwoorden?

Ja. Je combineert meerdere voorwaarden met EN (alles moet kloppen) of OF (één ervan is genoeg). Ook een hele sectie of stap kun je zo tonen of verbergen.

Kan ik twee velden met elkaar vergelijken?

Ja. Naast vergelijken met een vaste waarde kun je een veld tegen een ander veld afzetten — bijvoorbeeld een waarschuwing tonen zodra het bestelde aantal groter is dan de opgegeven voorraad. Voor getallen kies je uit gelijk aan, groter/kleiner dan en groter/kleiner dan of gelijk aan (≥ / ≤).

Wat kan een rekenveld precies?

Optellen, aftrekken, vermenigvuldigen en delen (met haakjes), met verwijzingen naar andere velden. Je stelt het aantal decimalen en een voor- of achtervoegsel in (bv. '€ '). Een rekenveld mag ook verder rekenen op een ander rekenveld.

Is de berekende waarde te vertrouwen?

Ja. De server rekent elk rekenveld bij het verzenden opnieuw uit, dus de opgeslagen uitkomst is niet vanuit de browser te manipuleren.

Formuliermet Smart fields

Smart fields that think along

Let your form adapt to the respondent: show only relevant questions, compare fields with each other, and have the form calculate live. All by dragging and clicking, without writing a line of code.

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In short

What this handles for you

Conditional fieldsShow or hide a field — or an entire section or step — based on earlier answers.

Compare two fieldsDon't just react to a fixed value — also compare fields with one another (e.g. quantity greater than stock).

Greater/less thanBesides 'equal to', also choose greater than, less than, and greater/less than or equal to (≥ / ≤).

AND / OR logicCombine multiple conditions: everything must match, or just one of them is enough.

Calculation fieldsCalculate a subtotal or total live from other fields — safely, without code.

Calculations on calculationsA calculation field can build further on another calculation field, and you can use that result as a condition again.

Show only what's relevant

Conditional fields & sections

Every respondent sees exactly the questions that apply to them. You set a condition per field — or per entire section — and it reacts live: both in the preview and for the real respondent.

Show-if per field or section — a short form increases completion rates.
Compare with a fixed value or another field — e.g. warn as soon as quantity is greater than stock.
Operators for numbers: equal to, greater/less than, and greater/less than or equal to (≥ / ≤).

app.formuliermet.nl/forms/bouwen

The form builder where you set a condition per field

Let the form calculate live

Calculation fields & live subtotals

Add a calculation field with a simple formula that refers to other fields. The result updates live while someone fills in the form — and the server recalculates everything on submit, so the value always adds up and can't be manipulated.

Quantity × price as a subtotal, or add up multiple fields into a total.
Functions — addition, subtraction, multiplication, division, powers, and rounding/minimum/maximum.
Read the price totals — e.g. "total incl. 5% surcharge" = total amount × 1.05.
Chaining + as a condition — build further on another calculation field and use the result in conditions.

app.formuliermet.nl/f/jouw-formulier

A form with a calculation field that updates live

Or let the AI assistant do it

Have the assistant set up conditions and calculation fields for you — just by asking.

“Show the field 'explanation' only if someone selects 'Other'”“Add a calculation field that works out quantity × price”“Show a warning if the quantity is greater than the stock”

Discover the AI assistant

How it works

Set up in three steps

Choose the field

Select the field or section you want to make conditional, or add a calculation field.

Set the rule

Define the condition or the formula — compare with another field if you like.

Done

Everything reacts live in the preview and for the respondent. Time to publish and share.

Who it's for

Widely used by

Handy for any form that needs to adapt to the answer — from orders to registrations and intakes.

Sales & orders Course providers Associations Healthcare & practices

Combine with

Related features

Everything works together in the same form — combine freely whatever you need.

Form builder Payments Surveys & quizzes Emails

FAQ

Questions about smart fields

Can I show a field based on multiple answers?

Yes. You combine multiple conditions with AND (everything must match) or OR (just one of them is enough). You can show or hide an entire section or step this way too.

Can I compare two fields with each other?

Yes. Besides comparing with a fixed value, you can weigh a field against another field — for example, showing a warning as soon as the ordered quantity is greater than the stated stock. For numbers, choose from equal to, greater/less than, and greater/less than or equal to (≥ / ≤).

What exactly can a calculation field do?

Addition, subtraction, multiplication, and division (with parentheses), with references to other fields. You set the number of decimal places and a prefix or suffix (e.g. '€ '). A calculation field can also build further on another calculation field.

Can I trust the calculated value?

Yes. The server recalculates every calculation field on submit, so the stored result can't be manipulated from the browser.